Now it's starting to make sense. I'll have to check the set again to see if there is another "non-nibbed" gasket.
The 5 nibbed gasket seems to fit. If this is all I have available, I should be able to cut them off and use a little RTV on the surface?
OK, I found the cork gasket. I was looking for rubber. (Another Chevy mindset) It seems a little too long, but the instructions say to use an adhesive to hold it down. I think it's long to compress fully into the pan groove, correct?
I'm still wondering if the 5-nibbed rubber one might still work, if it stays in place.
Now, I just discovered that the gasket set included two right side gaskets, no left side! So, I went and bought a pan gasket set. I'm not going to wait another week before the machine shop can get another set in!